What function does the operating range and marker interval control serve?

The operating range and marker interval control is essential for navigating and interpreting sonar or radar displays on a vessel. By selecting the operating range, users can determine how far out they want the system to detect and display targets. This is crucial for both short-distance maneuvers in harbors and long-range navigation on open water. The marker interval further provides a framework for interpreting the data by placing markers at regular intervals on the display, aiding in distance and position assessments.

This functionality is vital for effective situational awareness, which enables crew members to make informed decisions regarding navigation, obstacle avoidance, and overall safety at sea. Choosing the correct operating range and marker interval aligns the sonar or radar to the present operating conditions, allowing for enhanced performance and accuracy in navigation.